This nozzle is for the PolarStar Fusion Engine. This nozzle allows you to regulate your maximum FPS output based on your barrel length.
The following is a diagram showing the approximate FPS output of the red nozzle...

Polarstar Jack V2 Players Package "M4"
Velocity: 100-500FPS w/ .20g The Jack allows for easy velocity adjustment. Using a standard M4 as an example, velocity can be adjusted from below 100fps and up to approximately 500fps with a .20g BB...

This grease is highly recommend by PolarStar for use on the o-rings in the PR-15 rifles when changing out an air nozzle or general maintenance of the poppet valve. It also works extremely well for use in the valves of your gas guns magazine.

This nozzle is for the PolarStar Fusion Engine. This nozzle allows you to regulate your maximum FPS output based on your barrel length.
The following is a diagram showing the approximate FPS output of the red nozzle...

PolarStar MRS Regulator w/36" braided line
Introducing the new Modular Regulator System (MRS) designed and manufactured by PolarStar Airsoft. This ultra compact regulator stands just 3 inches tall and threads directly onto the HPA tank. In so doing it...